I also have been experiencing this issue. Plugging earphones in didn't cause the speakers to mute and the microphone didn't record anything. The solution was to comment out the following line in /etc/modprobe.d/alsa-base.conf:
options snd-hda-intel model=lifebook
I also have been experiencing this issue. Plugging earphones in didn't cause the speakers to mute and the microphone didn't record anything. The solution was to comment out the following line in /etc/modprobe. d/alsa- base.conf:
options snd-hda-intel model=lifebook